Descaling device of oilfield water injection structure

Abstract

The utility model relates to the field of oil field descaling devices, in particular to a descaling device of an oil field water injection structure, which comprises a bottom plate, a water injection well, a door frame, a limiting plate, a steel rope, a lifting module, a descaling module and a spraying module, the bottom plate is mounted at the upper end of the water injection well, and a through groove matched with a wellhead of the water injection well is formed in the center of the bottom plate in a penetrating manner; the upper end of the bottom plate is fixedly connected with a door frame, the two limiting plates are symmetrically and fixedly connected to the outer wall of a lifting shaft in the lifting module left and right, and the steel rope is wound around the outer wall of the lifting shaft and located between the two limiting plates; through cooperative work of the lifting module, the descaling module and the spraying module, the height of the descaling module can be automatically adjusted so as to adapt to descaling operation of water injection wells with different depths, dirt on the surfaces of the inner walls of the water injection wells can be removed, and the spraying module utilizes high-pressure water flow and evenly-distributed spraying heads to spray water on the surfaces of the inner walls of the water injection wells. Cleaning liquid is sprayed to the inner wall of the water injection well and is used in cooperation with the descaling module, and the descaling effect is further enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to oilfield descaling device field especially relates to a kind of descaling device of oilfield water injection structure. BACKGROUND

[0002] In the oilfield development process, water injection equipment is used to inject water meeting quality standards into oil layer accurately, which is professionally called oilfield water injection, and its core purpose is to maintain the pressure stability in oil layer, so as to be a key technical means to effectively supplement energy to formation and significantly improve the ultimate recovery of oilfield.

[0003] In oilfield production, the phenomenon of tubing fouling in water injection well is very common, which can cause the flow channel in the tubing to narrow, thereby reducing the water injection efficiency. The descaling device currently used lacks effective support and guide structure on the descaling component, so these components are prone to shaking during the descent process, which directly affects the efficiency of descaling.

[0004] Therefore, in view of the above-mentioned problem that the oilfield water injection well descaling device lacks effective support and guide structure on the descaling component, which makes these components prone to shaking during the descent process, a descaling device for oilfield water injection structure can be designed, which facilitates spraying the inner wall while descaling the inner wall of the oilfield water injection well through the rotating structure and the spraying structure, thereby improving the descaling effect. SUMMARY

[0005] In order to overcome the problem that the oilfield water injection well descaling device lacks effective support and guide structure on the descaling component, which makes these components prone to shaking during the descent process.

[0006] The technical solution of the utility model is: a descaling device for oilfield water injection structure, comprising a base plate, a water injection well, a portal frame, a limiting plate, a steel rope, a lifting module, a descaling module and a spraying module. The base plate is installed at the upper end of the water injection well, a through slot adapted to the wellhead of the water injection well is formed in the center of the base plate, the portal frame is fixedly connected to the upper end of the base plate, the limiting plate is symmetrically fixedly connected to the outer wall of the lifting shaft in the lifting module, the steel rope is wound around the outer wall of the lifting shaft and located between the two limiting plates, the lifting module is installed at the lower end of the portal frame, the power output structure in the lifting module is installed at the right end of the portal frame, the descaling module is installed at the lower end of the lifting module, the power output structure in the spraying module is installed at the upper end of the base plate, and the spraying structure in the spraying module is installed on the outer wall of the rotating shaft in the descaling module.

[0007] The base plate is the basic support structure of the entire descaling device, the injection well is the main channel for oil field injection, through which water meeting quality standards is injected into the oil layer to maintain the pressure of the oil layer and improve the oil recovery rate, the gantry is a structure in the descaling device for supporting the lifting module and the descaling module, the limiting plate is used to limit the position of the steel rope on the lifting shaft to prevent the steel rope from deviating during winding, the steel rope is wound and released through the limiting plate to realize the up-down movement of the lifting module, the lifting module is responsible for driving the descaling module to move up and down so as to perform descaling work on different positions in the injection well, the descaling module is the part that directly performs descaling work on the inner wall of the injection well, usually including scrapers, brushes and the like, and the spraying module is used to spray cleaning liquid or water to the inner wall of the injection well during the descaling work to improve the efficiency of descaling.

[0008] As a preferred, the lifting module includes a rotary motor, a rotary support seat, a lifting shaft and a first coupling; the rotary motor is installed at the right end of the gantry, the rotary support seat is installed at the inner wall of the left side of the gantry, the right end of the lifting shaft is installed with the first coupling and connected with the output shaft of the rotary motor through the first coupling, and the left end of the lifting shaft is rotatably connected in the rotary support seat; the rotary motor is the power source of the lifting module, providing rotary power to drive the lifting shaft to rotate, the rotary support seat is used to support the left end of the lifting shaft and allow it to rotate, the lifting shaft drives the steel rope to move through its rotation, and in turn drives the descaling module to move up and down in the injection well, thereby realizing the descaling work.

[0009] As a preferred, the lifting module further includes a shell, a round rod and a ball; the lower end of the steel rope is fixedly connected with the shell, the outer wall of the shell is fixedly connected with four round rods at equal intervals, and the end of each round rod is provided with a ball; the shell is a protective structure of the lifting module, used to provide a mounting platform for the servo motor, the round rod is a connecting component between the shell and the ball, which provides a fixed support point for the ball, so that the ball can roll along the inner wall of the injection well, while supporting the shell to avoid shaking during the descent, and the ball reduces friction through rolling to make the lifting process smoother and more stable.

[0010] As a preferred, the descaling module includes a servo motor, a second coupling and a rotating shaft; the servo motor is installed in the shell, the upper end of the rotating shaft is installed with the second coupling and connected with the output shaft of the servo motor through the second coupling, and the lower end of the rotating shaft extends downward into the injection well; the servo motor is the power source of the descaling module, responsible for providing precise rotary force to drive the rotating shaft to rotate, the second coupling is a component connecting the output shaft of the servo motor and the rotating shaft, responsible for transmitting the rotary force of the servo motor to the rotating shaft, and the rotating shaft is a transmission component of the descaling module, which transmits the rotary force of the servo motor to the circular plate, the spring, the brush and the scraper, so that they can rotate around the axis to remove the scale layer in the injection well.

[0011] As a preferred, the descaling module further comprises a circular plate, a spring, a brush and a scraper; the circular plate is fixedly connected to the outer wall of the rotating shaft, the side wall of the circular plate is fixedly connected with the spring at equal intervals, the telescopic end of the spring is fixedly connected with the brush, the scraper is circumferentially arranged on the outer wall of the rotating shaft and has three groups, and the three groups of scrapers are located at the lower end of the circular plate; the circular plate is a component fixedly connected to the outer wall of the rotating shaft, which serves as a support platform for the spring and the brush, so that they can rotate with the rotating shaft to brush and wash the scale layer; the spring endows the brush with certain elasticity and pressure, so that the brush can closely adhere to the surface of the scale layer for brushing and washing, thereby improving the descaling effect; and the scraper is used for scraping off stubborn dirt and residues on the surface of the scale layer, thereby performing preliminary descaling; and the brush removes the scale layer after being scraped by the scraper through rotation and brushing, thereby improving the descaling effect.

[0012] As a preferred, the spraying module comprises a disc, an annular water pipe and a spray head; the disc is fixedly connected to the outer wall of the rotating shaft and located at the upper end of the circular plate, the lower end of the disc is fixedly connected with the annular water pipe, and the outer wall of the spray head is provided with the spray head; the disc serves as a support and connecting component of the spraying module; the disc not only provides a stable mounting position for the annular water pipe, but also ensures that the spray head can rotate with the rotating shaft to realize spraying in different directions; the annular water pipe is a pipeline for conveying water flow in the spraying module, which uniformly distributes the water flow output by the water pump to each spray head; and the spray head is a component for spraying water flow in the spraying module, which sprays the water flow in the annular water pipe in a columnar form to spray the inner wall of the injection well.

[0013] As a preferred, the spraying module further comprises a water pump, a water tank and a hose; the water pump is installed at the upper end of the right side of the bottom plate, the water tank is located at the right side of the water pump, the water inlet port of the water pump is connected with the water outlet of the water tank through the hose, and the water outlet port of the water pump is connected with the water inlet of the annular water pipe through the hose; the water pump is a power source of the spraying module, which is responsible for pumping and pressurizing the water in the water tank to the annular water pipe to provide sufficient water pressure and flow for spraying; the water tank is a container for storing water in the spraying module, which provides a stable water source for the water pump; and the hose serves as a connecting component and has certain flexibility to facilitate bending and twisting during installation.

[0014] The utility model discloses the beneficial effect:

[0015] 1. Through the collaborative work of the lifting module, the descaling module and the spraying module, not only the height of the descaling module can be automatically adjusted to adapt to different depths of the injection well for descaling operation, but also the stubborn dirt on the surface of the inner wall of the injection well can be effectively removed; the spraying module sprays the cleaning liquid to the inner wall of the injection well by using high-pressure water flow and uniformly distributed spray heads, which is used in cooperation with the descaling module to further enhance the descaling effect.

[0016] 2. The round rod not only enables the ball to roll along the inner wall of the water injection well, but also supports the outer shell to prevent it from shaking during the descent. In addition, the ball reduces friction by rolling, making the lifting process smoother and more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a schematic diagram of the three-dimensional structure of the descaling device of the oil field water injection structure of the utility model;

[0018] Figure 2 Shown is a front view schematic diagram of a descaling device for an oilfield water injection structure of the present invention;

[0019] Figure 3 Shown is a top view schematic diagram of a descaling device for an oilfield water injection structure of the present invention;

[0020] Figure 4 Shown is a schematic diagram of the three-dimensional structure of the descaling device lifting module of the oil field water injection structure of the utility model;

[0021] Figure 5 Shown is a schematic diagram of the three-dimensional structure of the descaling module of the descaling device of the oil field water injection structure of the utility model;

[0022] Figure 6 Shown is a schematic diagram of the three-dimensional structure of the spray module of the descaling device of the oil field water injection structure of the present invention.

[0023] Explanation of the accompanying reference numerals: 1. Base plate; 2. Water injection well; 3. Door frame; 4. Limit plate; 5. Steel rope; 601. Rotating motor; 602. Rotating support seat; 603. Lifting shaft; 604. Coupling No. 1; 605. Housing; 606. Round rod; 607. Ball; 701. Servo motor; 702. Coupling No. 2; 703. Rotating shaft; 704. Circular plate; 705. Spring; 706. Brush; 707. Scraper; 801. Disc; 802. Annular water pipe; 803. Nozzle; 804. Water pump; 805. Water tank; 806. Hose. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] See also Figures 1-6The utility model provides an embodiment: a kind of oilfield injection structure's descaling device, including bottom plate 1, injection well 2, portal 3, limit plate 4, steel rope 5, lifting module, descaling module and spray module;Bottom plate 1 is installed in the upper end of injection well 2, the center of bottom plate 1 is penetrated and is equipped with the through slot compatible with injection well 2 wellhead, the upper end of bottom plate 1 is fixedly connected with portal 3, limit plate 4 has two and is fixedly connected in the outer wall of lifting shaft 603 in lifting module left and right symmetrically, steel rope 5 is wound in the outer wall of lifting shaft 603 and steel rope 5 is located between two limit plates 4, lifting module is installed in the lower end of portal 3, the power output structure in lifting module is installed in the right end of portal 3, descaling module is installed in the lower end of lifting module, the power output structure in spray module is installed in the upper end of bottom plate 1, the spraying structure in spray module is installed in the outer wall of rotating shaft 703 in descaling module, bottom plate 1 bottom plate 1 is the basic support structure of entire descaling device, injection well 2 is the main passage of oilfield injection, through it, water that meets quality standard is injected into oil layer, to maintain oil layer pressure, improve oilfield recovery, portal 3 is the structure for supporting lifting module and descaling module in descaling device, limit plate 4 is used to limit the position of steel rope 5 on lifting shaft 603, prevent steel rope 5 from deviating in winding process, steel rope 5 realizes the up-and-down movement of lifting module by its winding and release, lifting module is responsible for driving descaling module to move up and down, so as to carry out descaling operation to different positions in injection well 2, descaling module is the part that directly carries out descaling operation to the inner wall of injection well 2, usually including scraper, brush 706 etc., spray module is used to spray cleaning fluid or water to the inner wall of injection well 2 during descaling operation, so as to improve the efficiency of descaling.

[0026] Please refer to Figure 4In the embodiment, the lifting module comprises a rotating motor 601, a rotating support base 602, a lifting shaft 603 and a first coupling 604; the rotating motor 601 is installed at the right end of the portal 3, the rotating support base 602 is installed at the left inner wall of the portal 3, the right end of the lifting shaft 603 is installed with the first coupling 604 and is connected with the output shaft of the rotating motor 601 through the first coupling 604, and the left end of the lifting shaft 603 is rotatably connected in the rotating support base 602; the rotating motor 601 is the power source of the lifting module, provides rotating power to drive the lifting shaft 603 to rotate, the rotating support base 602 is used for supporting the left end of the lifting shaft 603 and allowing it to rotate, the lifting shaft 603 drives the steel wire 5 to move through rotation, and in turn drives the descaling module to move up and down in the injection well 2, so that the descaling operation is realized, the shell 605 is the protection structure of the lifting module and is used for providing the installation platform of the servo motor 701, the round rod 606 is the connecting component between the shell 605 and the ball 607, which provides a fixed support point for the ball 607, so that the ball 607 can roll along the inner wall of the injection well 2 and support the shell 605, thereby avoiding shaking of the shell 605 in the descending process, and the ball 607 reduces the friction through rolling, so that the lifting process is more smooth and stable.

[0027] Please refer to Figure 5In the embodiment, the descaling module comprises a servo motor 701, a second coupling 702 and a rotating shaft 703; the servo motor 701 is installed in the shell 605, the upper end of the rotating shaft 703 is installed with the second coupling 702 and is connected with the output shaft of the servo motor 701 through the second coupling 702, the lower end of the rotating shaft 703 extends downward into the injection well 2, the descaling module further comprises a circular plate 704, a spring 705, a brush 706 and a scraper 707; the circular plate 704 is fixedly connected to the outer wall of the rotating shaft 703, the side wall of the circular plate 704 is fixedly connected with the spring 705 at equal intervals, the telescopic end of the spring 705 is fixedly connected with the brush 706, the scraper 707 has three groups and is circumferentially arranged on the outer wall of the rotating shaft 703, the three groups of scrapers 707 are all located at the lower end of the circular plate 704, the servo motor 701 is the power source of the descaling module and is responsible for providing precise control of the rotating force to drive the rotating shaft 703 to rotate, the second coupling 702 is a component connecting the output shaft of the servo motor 701 and the rotating shaft 703 and is responsible for transmitting the rotating force of the servo motor 701 to the rotating shaft 703, the rotating shaft 703 is a transmission component of the descaling module, which transmits the rotating force of the servo motor 701 to the circular plate 704, the spring 705, the brush 706 and the scraper 707, so that they can rotate around the axis to remove the scale layer in the injection well 2, the circular plate 704 is a component fixedly connected to the outer wall of the rotating shaft 703, which serves as a support platform for the spring 705 and the brush 706, so that they can rotate with the rotation of the rotating shaft 703 to brush the scale layer, the spring 705 endows the brush 706 with certain elasticity and pressure, so that the brush 706 can brush the scale layer surface closely to improve the descaling effect, the scraper 707 is used for scraping the stubborn dirt and residues on the scale layer surface to preliminarily remove the scale, the brush 706 removes the scale layer after being scraped by the scraper 707 through rotation and brushing to improve the descaling effect.

[0028] Please refer to Figure 6In the embodiment, the spraying module comprises a disc 801, a ring-shaped water pipe 802 and a spray head 803; the disc 801 is fixedly connected to the outer wall of the rotating shaft 703 and located at the upper end of the circular plate 704, the lower end of the disc 801 is fixedly connected with the ring-shaped water pipe 802, the outer wall of the spray head 803 is provided with the spray head 803, the spraying module further comprises a water pump 804, a water tank 805 and a hose 806; the water pump 804 is installed at the right upper end of the bottom plate 1, the water tank 805 is located at the right side of the water pump 804, the water inlet port of the water pump 804 is connected with the water outlet of the water tank 805 through the hose 806, the water outlet port of the water pump 804 is connected with the water inlet of the ring-shaped water pipe 802 through the hose 806, the disc 801 serves as a support and connecting component of the spraying module, which not only provides a stable mounting position for the ring-shaped water pipe 802, but also ensures that the spray head 803 can rotate with the rotation of the rotating shaft 703, realizing spraying in different directions, the ring-shaped water pipe 802 is a pipeline for conveying water flow in the spraying module, which uniformly distributes the water flow output by the water pump 804 to each spray head 803, the spray head 803 is a component for spraying water flow in the spraying module, which sprays the water flow in the ring-shaped water pipe 802 in a columnar form to spray the inner wall of the water injection well 2, the water pump 804 is a power source of the spraying module, which is responsible for pumping and pressurizing the water in the water tank 805 to the ring-shaped water pipe 802, providing sufficient water pressure and flow for spraying, the water tank 805 is a container for storing water in the spraying module, which provides a stable water source for the water pump 804, the hose 806 serves as a connecting component, which has a certain flexibility to facilitate bending and twisting during installation.

[0029] In the working process, the worker first starts the rotating motor 601, which drives the lifting shaft 603 to start rotating, thereby smoothly moving the steel wire 5, the displacement of the steel wire 5 enables the shell 605 to move up and down, and the circular rod 606 built in the shell 605 not only guides the rolling of the ball 607 to the inner wall of the water injection well 2 to ensure smooth travel, but also serves as a support structure to effectively prevent the shell 605 from shaking during the descending process, so that the entire lifting process is smooth and stable.

[0030] Subsequently, the servo motor 701 and the water pump 804 are started, the starting of the servo motor 701 drives the rotating shaft 703 to rotate, and this power is transmitted to the brush 706 and the scraper 707, making them rotate synchronously, since the scraper 707 is located below the brush 706, the working sequence is first to remove the surface dirt by the scraper 707, and then the brush 706 further cleans in a rotating manner, which significantly improves the cleaning effect.

[0031] At the same time, the water pump 804 starts to work, which pumps out the clean water in the water tank 805 and pressurizes, and then delivers to the annular water pipe 802 through the hose 806, and the high-pressure water flow is evenly sprayed out as the spray head 803 is opened, which is complementary to the physical cleaning of the brush 706, and acts on the inner wall of the injection well 2 together, so that the dirt is more easily stripped and washed away, thereby further enhancing the cleaning efficiency.

[0032] Through the above steps, through the cooperative work of the lifting module, the descaling module and the spraying module, not only the height of the descaling module can be automatically adjusted to adapt to different depths of the injection well 2 for descaling operation, but also the stubborn dirt on the inner wall surface of the injection well 2 can be effectively removed, the spraying module uses the high-pressure water flow and the uniformly distributed spray head 803 to uniformly spray the cleaning liquid to every corner, which is used in cooperation with the descaling module to further enhance the descaling effect, and solves the problem that the descaling device for the oilfield injection well 2 lacks effective support and guide structure on the descaling part, so that these parts are prone to shaking during the descending process.

[0033] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the person skilled in the art without departing from the purpose of the utility model.

Claims

1. A scale removal device for an oilfield water injection structure, comprising a base plate (1), a water injection well (2), a portal frame (3), a limiting plate (4) and a steel rope (5); characterized in that: Also include the lifting module, descaling module and spray module; the bottom plate (1) is installed in the upper end of the injection well (2), the center of the bottom plate (1) is provided with a through slot matched with the well mouth of the injection well (2), the upper end of the bottom plate (1) is fixedly connected with a portal (3), the limiting plates (4) are two and are fixedly connected with the outer wall of the lifting shaft (603) in the lifting module, the steel rope (5) is wound on the outer wall of the lifting shaft (603) and the steel rope (5) is located between the two limiting plates (4), the lifting module is installed at the lower end of the portal (3), the power output structure in the lifting module is installed at the right end of the portal (3), the descaling module is installed at the lower end of the lifting module, the lifting module comprises a rotary motor (601), a rotary support seat (602), a lifting shaft (603) and a first coupling (604); the rotary motor (601) is installed at the right end of the portal (3), the rotary support seat (602) is installed on the inner wall of the left side of the portal (3), the right end of the lifting shaft (603) is installed with the first coupling (604) and is connected with the output shaft of the rotary motor (601) through the first coupling (604), the left end of the lifting shaft (603) is rotatably connected in the rotary support seat (602), the lifting module further comprises an outer shell (605), a round rod (606) and a ball (607); the lower end of the steel rope (5) is fixedly connected with the outer shell (605), the outer wall of the outer shell (605) is fixedly connected with four round rods (606) at equal intervals, the end of each round rod (606) is provided with a ball (607), the power output structure in the spray module is installed at the upper end of the bottom plate (1), and the spraying structure in the spray module is installed on the outer wall of the shaft (703) in the descaling module.

2. The scale removal device for an oilfield water injection structure according to claim 1, characterized by: The descaling module comprises a servo motor (701), a second coupling (702) and a shaft (703); the servo motor (701) is installed in the outer shell (605), the upper end of the shaft (703) is provided with the second coupling (702) and is connected with the output shaft of the servo motor (701) through the second coupling (702), and the lower end of the shaft (703) extends downward into the injection well (2).

3. The scale removal device for an oilfield water injection structure of claim 2, wherein: The descaling module further comprises a circular plate (704), a spring (705), a brush (706) and a scraper (707); the circular plate (704) is fixedly connected to the outer wall of the shaft (703), the side wall of the circular plate (704) is fixedly connected with the spring (705) at equal intervals, the extension end of the spring (705) is fixedly connected with the brush (706), and the scraper (707) is circumferentially arranged on the outer wall of the shaft (703), and the three groups of scrapers (707) are located at the lower end of the circular plate (704).

4. The scale removal device for an oilfield water injection structure according to claim 3, characterized by: The spray module comprises a disc (801), an annular water pipe (802) and a spray head (803); the disc (801) is fixedly connected to the outer wall of the shaft (703) and located at the upper end of the circular plate (704), the lower end of the disc (801) is fixedly connected with the annular water pipe (802), and the outer wall of the spray head (803) is provided with the spray head (803).

5. The scale removal device for an oilfield water injection structure of claim 4, wherein: The spraying module further comprises a water pump (804), a water tank (805) and a hose (806); the water pump (804) is installed on the right upper end of the bottom plate (1), the water tank (805) is located on the right side of the water pump (804), the water inlet port of the water pump (804) is connected with the water outlet of the water tank (805) through the hose (806), and the water outlet port of the water pump (804) is connected with the water inlet of the annular water pipe (802) through the hose (806).

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